"Another such feature is the lack of endemic infectious retroviruses in humans. The problem is that these viruses are present in the other primates, and so according to evolutionists these viruses must be present in their common ancestor which, again according to evolution, would be an ancestor of humans as well. This leaves evolution with yet another ridiculous just-so story. ... In other words, when evolution spontaneously created humans our DNA must have been “purged.” We got a do-over! Hilarious."

Endemic infectious retroviruses, being infectious (acquired), and not endogenous don't integrate in the germline and transmit--leaving nothing to be 'purged' from the genome after the host evolved to be non-susceptible to infection.